Exam 6: Genetic Linkage and Mapping in Eukaryotes

In certain algae and in most ascomycete fungi, the nuclei in the cells present in the majority of their life cycle are in the _____ condition.

Creighton and McClintock worked with _______ and their model system to show that homologous chromosomes physically exchange genetic information during crossing over.

The first observational evidence that genes may be inherited together rather than by simple Mendelian inheritance was provided by __________.

A testcross is always performed between the individual that is heterozygous for the genes to be mapped and an individual who is ____________.

In a given mapping experiment, you expect that incidence of double crossovers is 3.5%, but you only observe 2.5%. This can be explained by ________________.

In a mapping experiment with three linked genes, which phenotype should occur most often in the F₂ offspring?

Which of the following are highly desirable characteristics of an organism that make it relatively easy to construct a genetic linkage map?

Another name for a chromosome is a _______, since it contains genes that are often inherited together.

The locus is the physical place of a gene on a chromosome.

The percentage of recombination associated with independent assortment should approximate 50%.